As you can see they're much bigger now. Also, since they chose such a small place to build the nest now there is not much space for them both and one is normally just stepping on the other. The yellow color they used to have has almost disappeared and they start looking like pigeons now.
I would think that they are almost ready to leave the nest. Probably one more week? Who knows, but the fact is that is a nice experience to see them grow :)